The Vault is a location seen briefly in F.E.A.R. Perseus Mandate.
F.E.A.R. Perseus MandateEdit
The Vault is located inside the ATC Cloning Facility, Vivendi's version of the Perseus Compound. It is believed to contain the DNA of subjects that crucial to Perseus and Origin project. The Sergeant pursues the Nightcrawler mercenaries as to ensure that they do not obtain the DNA of Alma Wade, a powerful psionic whose DNA was used for the top-secret experiments Project Origin and Project Perseus. After the Vault is opened, many supernatural enemies spill out, attacking both the Nightcrawlers and the Sergeant. The Nightcrawlers manage to obtain the sample of her DNA but lose it, as their remaining forces and the Nightcrawler Commander are killed by the Sergeant.
Because F.E.A.R. Perseus Mandate is not considered to be canon, this Vault does not exist in the official timeline.